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Putting Vaccine Benefits and Risks into Perspective for Patients and Parents. Material authored by: Gary S. Marshall, MD Professor of Pediatrics Chief, Division of Pediatric Infectious Diseases Director, Pediatric Clinical Trials Unit University of Louisville School of Medicine - PowerPoint PPT Presentation
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Putting Vaccine Benefits and Risks into Perspective for Patients and Parents
Material authored by:Gary S. Marshall, MDProfessor of PediatricsChief, Division of Pediatric Infectious DiseasesDirector, Pediatric Clinical Trials UnitUniversity of Louisville School of MedicineLouisville, Kentucky
From Fear of Disease to Fear of Adverse Events
Salk J. Pediatr Infect Dis J. 1987;6:889-893.Infectious Disease News; November, 1998.
National Vaccine Information CenterGeneration RescueConcerned Parents For Vaccine SafetyCitizens for Healthcare FreedomVaccine Information Resource CenterPAVE: People Advocating Vaccine EducationFuture GenerationsVaccination AlternativesNatural Immunity Information NetworkAge of AutismHealthy AlternativesThe Canary PartySafe MindsThinkTwice Global Vaccine Institute
A Sampling of Anti-Vaccine Groups
Marshall GS. The Vaccine Handbook. PCI Books, Inc.; 2012.
Undervaccinated UnvaccinatedBlack WhiteYoung, unmarried mother without college degree
Married mother with college degree
Near poverty level Annual income > $75,000Live in central city Live in states with
philosophical exemptionsClaim doctors have little influence over vaccination decisions
Smith PJ, et al. Pediatrics 2004;114:187-195.
Who Are the Vaccine Protestors?
1. Vaccines are good for public health
Immunization Truths
DiseaseHistorical Peak 2004-2006
Cases Deaths Cases Deaths
Diphtheria 30,508 3,065 0 0Measles 763,094 552 55 0Mumps 212,932 50 6,584 0Pertussis 265,269 7,518 15,632 27Poliomyelitis (acute) 42,033 2,720 0 0Poliomyelitis (paralytic) 21,269 3,145 0 0Rubella 488,796 24 11 0Congenital rubella synd 20,000 2,160 1 0Smallpox 110,672 2,510 0 0Tetanus 601 511 41 4
Vaccine Programs Initiated Before 1980
Roush SW, et al. JAMA. 2007;298:2155-2163.
DiseaseHistorical Peak 2004-2006
Cases Deaths Cases† Deaths†
Hepatitis A 254,518 298 15,298 18
Hepatitis B 74,361 267 13,169 47
Hib (invasive) > 20,000 > 1,000 < 50 < 5
Pneumo (invasive) 64,400 7,300 41,550 4,850
Varicella 5,358,595 138 612,768 19†Estimates
Vaccine Programs Initiated After 1980
Roush SW, et al. JAMA. 2007;298:2155-2163.
Infant feedingChildhood safety
Folic acidDiet
Alcohol and drugsNewborn screening
Physical activityAdolescent tobacco
Breast cancerColorectal cancer
Cervical cancerChildhood immunizations
0 50 100 150 200 250 300 350 400 450 500
QALYs Saved x 1000
Impact of Childhood Vaccinations
Coffield AB, et al. Am J Prev Med. 2001;21:1-9.
VaccinePrograms†
2001 Birth Cohort (N = 3,803,295)
Cases Deaths Total Costs
Without 14,330,376 33,564 $46,557 mil
With 708,372 463 $482 mil†DTaP, Hib, IPV, MMR, HepB, varicella (not included: rotavirus, HepA, PCV-7, influenza, MCV-4, HPV)
$1 spent = $5 in direct medical costs$11 in societal costs
Impact of Childhood Vaccinations
Zhou F, et al. Arch Pediatr Adolesc Med. 2005;159:1136-1144.
1. Vaccines are good for public health2. Public concern about vaccines is pervasive
Immunization Truths
Vaccines are a good way to protect children 90%
Generally follow doctor’s recommendations 88%
Concerned about adverse effects 54%
Vaccines cause autism 25%
Personally know someone harmed by MMR 40%
Refused at least one recommended vaccine 12%
Parental Concerns About Vaccines
Freed GL, et al. Pediatrics. 2010;125:654-659.
Newsweek. July 31, 2000Time. June 2, 2008
Public Concern Is Pervasive
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm
Immunization Truths
0
500
1940 19901965
Vaccineuptake81%
31%93%
Inci
denc
e pe
r 100
,000
Incidence of Pertussis:England and Wales
Gangarosa EJ, et al. Lancet. 1998;351:356-361.
Disease Risk
Attributable Risk Among
Refusers
Attributable Risk in
Population
Pertussis 23-times higher 99.5% 11%
Varicella 9-times higher 99.4% 5%
Case Control Studies
Glanz JM, et al. Pediatrics. 2009;123:1446-1451. Glanz JM, et al. Arch Pediatr Adol Med. 2010;164:66-70.
Data from Kaiser Permanente, Colorado (1996-2008)
2000 2010
Wakefield AJ, et al. Lancet. 1998;351:637-641.
1988 1989 1990 1991 1992 19930
5
10
15
20
25
30
35
0
20
40
60
80
100
AutismMMR
Cases per 10,000 Boys
2-5 Yrs
Vaccine Prevalence
(%)
Annual Birth Cohort
MMR and Autism: United Kingdom
Kaye JA, et al. Br Med J. 2001;322:460-463.
1980
1982
1984
1986
1988
1990
1992
1994
0
200
400
600
800
1000
1200
1400
0
20
40
60
80
100AutismMMR by 24 Months
Birth Cohort
CasesVaccine
Prevalence (%)
MMR and Autism: California
Dales L, et al. JAMA. 2001;285:1183-1185.
Population of Denmark
Children born between01/01/91 and 12/31/98
The Past
MMR1,647,504 person-yr
No MMR482,360 person-yr
Danish Cohort Study
Madsen KM, et al. N Engl J Med. 2002;347:1477-1482.
Population of Denmark
Children born between01/01/91 and 12/31/98
The Past
MMR1,647,504 person-yr
No MMR482,360 person-yr
The Present
Autism: 263ASD: 345
Autism: 53ASD: 77
Danish Cohort Study
Madsen KM, et al. N Engl J Med. 2002;347:1477-1482.
Population of Denmark
Children born between01/01/91 and 12/31/98
The Past
MMR1,647,504 person-yr
No MMR482,360 person-yr
The Present
Autism: 263ASD: 345
Autism: 53ASD: 77
Relative risk:Autism: 0.92 (0.68-1.24)ASD: 0.83 (0.65-1.07)
Danish Cohort Study
Madsen KM, et al. N Engl J Med. 2002;347:1477-1482.
2000 2010
Murch SH, et al. Lancet. 2004;363:750.
2000 2010
General Medical Council, 2010. http://www.gmc-uk.org/Wakefield_SPM_and_SANCTION.pdf_32595267.pdf. Accessed March 2012.
Editorial. Lancet. 2010;375:445.
2000 2010
2,00092
MM
R V
acci
ne C
over
age
(%)
Con
firm
ed M
easl
es C
ases
in
Engl
and
and
Wal
es1,400
1,200
1,000
800
600
400
200
0
1,600
1,800
86
84
82
80
78
76
74
72
88
90
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Consequences of Public Fear
Leask J. Nature. 2011;473;443-445. Editorial Team. Eurosurveillance. http://www.eurosurveillance.org/viewarticle.aspx?articleid=18919. Accessed March 2012.
Wakefield paper
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe
Immunization Truths
Marshall GS. The Vaccine Handbook. PCI Books, Inc.; 2012.
Pre-Clinical
Center for Biologics Evaluation and
ResearchGood Manufacturing,
Laboratory and Clinical Practices
Phased clinical trials
Restoring Public Confidence
Marshall GS. The Vaccine Handbook. PCI Books, Inc.; 2012.
Pre-Clinical
Center for Biologics Evaluation and
ResearchGood Manufacturing,
Laboratory and Clinical Practices
Phased clinical trials
Licensure andRecommendation
FDAACIPAAP
AAFP
Restoring Public Confidence
Marshall GS. The Vaccine Handbook. PCI Books, Inc.; 2012.
Pre-Clinical
Center for Biologics Evaluation and
ResearchGood Manufacturing,
Laboratory and Clinical Practices
Phased clinical trials
Licensure andRecommendation
FDAACIPAAP
AAFP
Post-Marketing
Phase 4 studiesPharmacovigilanceVaccine Adverse Event Reporting SystemVaccine Safety DatalinkCISA NetworkBrighton CollaborationAd-hoc committees
Restoring Public Confidence
Background rate in general
population
Rate in vaccinated population2-fold higher 10-fold higher 100-fold higher
1 in 10,000 141,000 5,500 5001 in 100,000 1,238,000 53,500 2,5001 in 1,000,000 12,951,500 532,500 23,500Assumes 5% risk of Type I error and power of 90%
How Many Subjects are NeededTo Detect Adverse Events?
Evans D, et al. J Infect Dis. 2009;200:321-328.
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe5. Parents are human
Immunization Truths
OutcomeYes
ExposureYes a
The Power of Box “a”
Offit PA. Immunization Action Coalition Web site.http://www.immunize.org/safety/boxa.pdf. Accessed March 2012.
OutcomeYes No
ExposureYes a bNo c d
The Power of Box “a”
Offit PA. Immunization Action Coalition Web site.http://www.immunize.org/safety/boxa.pdf. Accessed March 2012.
10,000,000pregnant women
get a shot 6 weekslater
16,684have a spontaneous
abortion
10,000,000women
get a shot 6 weekslater
86develop
optic neuritis
Folk Numeracy
Shermer M. Sci Amer. http://www.scientificamerican.com/article.cfm?id=why-our-brains-do-not-intuitively-grasp-probabilities. Accessed January 2012. Black S, et al. Lancet. 2009;374:2115-2122.
10,000,000pregnant women
get a shot 6 weekslater
16,684have a spontaneous
abortion
10,000,000women
get a shot 6 weekslater
86develop
optic neuritis
If the shot is a placebo!
Folk Numeracy
Shermer M. Sci Amer. http://www.scientificamerican.com/article.cfm?id=why-our-brains-do-not-intuitively-grasp-probabilities. Accessed January 2012. Black S, et al. Lancet. 2009;374:2115-2122.
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe5. Parents are human6. People don’t understand vaccinology
Immunization Truths
AgeVaccine
Birth 1mo
2mos
4mos
12mos
6mos
18mos
15mos
24mos
11-12yrs
4-6yrs
14-18yrs
Measles, Mumps,Rubella
MMR
Diphtheria,Tetanus,Pertussis
DTP DTP DTP DTP Td
DTP
Polio OPV OPV OPV(OPV) OPV
1982
Childhood Schedule, 1982
Childhood Schedule, 2012
Vaccine 1960 1980 2000 2012
Smallpox 200Diphtheria 1 1 1 1Tetanus 1 1 1 1Pertussis 3000 3000 5 5Polio 15 15 15 15MMR 24 24 24Hib 2 2Varicella 69 69PCV7/PCV13 8 14HepB 1 1HepA 4HPV4 4Rotavirus 20MCV4 5Influenza 12Total 3217 3041 126 177
Antigen Burden
Offit P. Pediatrics. 2002;109:124-129 Marshall GS. The Vaccine Handbook. PCI Books: 2012.
0 1 2 4 6 12 15 18 19-23 2-3 4-6
HepBRotaDTaPHibPCV7IPVFluMeaslesVaricellaHepA
Alternative Vaccine Schedule
Sears RW. The Vaccine Book. Little Brown & Co. 2007.
Argument The TruthGovernment and pharmaceutical companies conspire to misrepresent data.
There is no evidence of conspiracy.
Natural immunity is better than vaccine-induced immunity.
The cost of natural immunity is the risk of serious disease or death.
Vaccines are not adequately tested for safety.
Vaccines are among the most thoroughly tested pharmaceuticals in the world.
Vaccines are recommended for protection of the public, not individuals.
Individuals benefit from vaccines through both individual and herd immunity.
There is a middle ground between causality and coincidence.
Either vaccines do or don’t cause certain adverse events.
Science fails because it cannot prove that vaccines don’t cause adverse events.
Science can only reject or fail to reject the null hypothesis.
Alternative Vaccine Schedule
Offit P, Moser C. Pediatrics. 2009;123:e164.
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe5. Parents are human6. People don’t understand vaccinology7. It’s all about risk perception
Immunization Truths
What We’re Afraid Of What The Real Risk IsShark attacks (28) Dog bites (4.5 million)Murder (14,180) Suicide (33,289)Death by peanut allergy (50) Death by poisoning (27,531)Death by plane crash (321) Death by car crash (34,017)
Risk Perception
Kalb C, et al. Newsweek. 2010;155(22).
Influenza Varicella Anthrax Smallpox0
10,000
20,000
30,000
40,000 36000
10 0 0
Dea
ths
Estimated Annual Mortality in the US
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe5. Parents are human6. People don’t understand vaccinology7. It’s all about risk perception8. There are vaccine anti-champions
Immunization Truths
US Weekly. Oct 27, 2008
Thimerosal
1975 1980 1985 1990 1995 20000
1
2
3
4
5
2-4
Year
Aut
ism
Inci
denc
e pe
r 10,
000 Age
Thimerosal-containingvaccines removed
Danish Population-Based Study
Madsen KM, et al. Pediatrics. 2003;112:604-606.
Autism in California
Adapted from Schechter R, Grether J. Arch Gen Psychiatry. 2008;65:19-24.
1989 1991 1993 1995 1997 1999 2001 2002 2003
x x x x x x x x x x x
x
Cas
es p
er 1
000
Live
Birt
hs4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
Year of Birth
Age of Children, y121110 9
8765
432
Vaccine Trade Name Manufacturer StatusDiphtheria, tetanus, pertussis
InfanrixDAPTACEL
GlaxoSmithKlineSanofi Pasteur
FreeFree
PCV Prevnar 13 Wyeth FreePolio IPOL Sanofi Pasteur FreeHepatitis B RECOMBIVAX HB
Engerix-BMerckGlaxoSmithKline
FreeFree
Hib conjugate ActHIBPedvaxHIBHiberix
Sanofi PasteurMerckGlaxoSmithKline
FreeFreeFree
Hib/Hepatitis B COMVAX Merck FreeMMR M-M-RII Merck Free
Varicella VARIVAX Merck FreeDTaP/Hep-B/IPV Pediarix GlaxoSmithKline FreeInfluenza Fluzone T-free
Fluvirin P-freeFlumist
Sanofi pasteurNovartisMedImmune
Free< 1.0 mcg/0.5 mLFree
Hepatitis A VAQTAHavrix
MerckGlaxoSmithKline
FreeFree
Thimerosal in Vaccines
FDA. http://www.fda.gov/BiologicsBloodVaccines/SafetyAvailability/VaccineSafety/UCM096228#t1. Accessed March 2012.
5.6 oz30 mcg
Tripedia*< 0.3 mcg/dose
Mercury Exposure
Yess NJ. J AOAC Intl. 1993;76:36-38.
*Tripedia is no longer available; this example has been used to put exposure risk into perspective
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe5. Parents are human6. People don’t understand vaccinology7. It’s all about risk perception8. There are vaccine anti-champions9. Questions remain
Immunization Truths
Which challenges should be investigated? What about perceived conflict of interest? How do families differ in medical orientation? How should vaccine refusal be handled?
Questions
1. Vaccines are good for public health2. Public concern about vaccines is pervasive3. Fear of vaccines can lead to public harm4. Vaccines are not 100% safe5. Parents are human6. People don’t understand vaccinology7. It’s all about risk perception8. There are vaccine anti-champions9. Questions remain10. Parents have to make a choice
Immunization Truths
RadioDaytime TV
Complementary providerNewspaper
TV newsMagazines
OtherInternet
CDCAAP
FriendsChild's other parent
FamilyChild's provider
0 10 20 30 40 50 60 70 80 90 100
Percent of Parents
Sources of Information About Vaccines
Kennedy A, et al. Pediatrics. 2011;127:S92-S99.
Don’t vaccinate VaccinateDiscredited “scientists” Robust science“Advocacy” groups Authoritative bodiesCelebrities YouVulnerability to disease Protection with minimal risk
Parents Must Make a Choice